Combustion Limits of SHS-Systems with Radiant Heat Loss
A. P. Aldushin, P. M. Krishenik, S. A. Rogachev
Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Russia
Keywords: combustion wave, critical conditions, SHS, radiant heat loss, combustion failure
Abstract
Using mathematical modeling methods, we analyzed combustion failure of a cylindrical sample undergoing radiant heat transfer. A method is proposed for estimating critical parameters-the critical diameter, temperature, and velocity at the combustion limit-under conditions of predominantly radiant heat loss, typical of high-temperature SHS systems. The results are compared with similar values for maximum heat loss, cooling the cylinder surface to ambient temperature. The calculation results can be used to estimate the critical cylinder radius and the effective activation energy of the reaction. A method is proposed for estimating the effective activation energy of the heat release rate during gasless combustion of condensed media.
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